Question about Honeywell HZ-710 Oil Filled Radiator Heater

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Won't stay on

When I turn the heater on there is an F appears. it stays one just a few seconds and shuts off.

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  • cookiegirl Nov 06, 2007

    My does the exact same thing.

  • cerah Nov 09, 2007

    ditto - press power button. if select temp (right button) you can change F (for farenheit? or C Celcius? if press center or left buttons three slashes like an E display and it powers off. Occaisionally a temperature displays, like 62.

  • Anonymous Nov 14, 2007

    same problem

  • RichardHead Nov 25, 2007

    Anybody figure out how to get it to stay on after seeing the "F"?

  • lee59 Mar 17, 2008

    when i turn my heater on an f appears and the heater only stays on for a few seconds

  • biglobster May 06, 2008

    It shuts off by itself after a few minutes or after the temperature reaches the thermostat setting. This problem happens 30% of the time.

  • sokol2 Aug 13, 2008

    I have the same problem. Once I thought the oil might be low so I tipped on it side and moved the oil inside around. It did seem to help once. It stayed on a couple hours. Not a solution, so now I am trying to get the manual.

  • Anonymous Oct 29, 2008

    It's very frustrating - It used to come on for a few minutes and shuts off , now you turn it on and the F appears on and off immediately. I called the 1-800-332-1110 and they told me that since it has a 5 year warranty to send the whole unit and $10 to 4755 Southpoint Drive, Memphis TN 38118.

  • Jon Martin Nov 19, 2008

    I'm seeing the exact same problem. When I attempt to turn on the heater, it displays 'F' and then immediately turns off. Sometimes I get the 3 lines for the power level. The unit worked great last winter, but after a spring, summer and fall in the closet it seems to be worthless.

  • Anonymous Dec 05, 2008

    This is the third heating season that I've had my HZ-710 and it looks like its finally quitting on me for good. I used to be able monkey with the buttons to keep it on for at least a little while but now it shuts of after a few seconds. This heater never has worked like I'd expected a $70 heater to work and should have taken it back to Walmart when i first had problems with it.

  • gap2th Dec 05, 2008

    when I turn on the power a F appears and it shuts off after a few seconds

  • Anonymous Dec 22, 2008

    What a royal piece of ****. Mine does the same thing after 2 years.

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5 Answers

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Mso 9]> Normal 0 mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} @page Section1 {size:8.5in 11.0in; margin:1.0in 1.25in 1.0in 1.25in; mso-header-margin:.5in; mso-footer-margin:.5in; mso-paper-source:0;} div.Section1 {page:Section1;} --> Warning this will disable the tip over sensor, Unit will not automatically turn off when knocked over!!

I had the same problem with the "F" appearing and the unit turning off. I read a similar post about the hz-709, that talks of removing the "tip over sensor". To remove the sensor, "two little black boxes on one chip, that rattles like there is a ball bearing in each box."
Remove two small screws on the bottom of the heater then remove two small screws on the top of the heater "top screws are under a small cap that can be popped of with a flat head screwdriver."
Inside long panel front Unplug three wires, White Brown Blue "remember where they where plugged in, so you can plug then back in later."
Inside long panel front there is a silver panel with eight screws on it only the, only the four "corner" screws have to be removed to remove silver panel.
remove silver panel then remove remaining 4 screws, Now remove front control from long panel front, there are 6 screws only have to remove the four inner screws, Open white box, slip large chip off three prongs,
there are two small blue wires connecting to the two small black boxes from the beginning of this post, cut wire from box, twist or solder together, and tape with electrical tape.
"You have just removed/disable the tip over sensor, Unit will not turn off when knocked over!!"
Reverse steps reassemble the unit and enjoy.

Posted on Dec 23, 2008

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Greg12345's solution seems to be correct. i have a model 710 and had already had it open, debating wheather to bypass that very tip sensor, when i searched and found this post encouraging me to proceed. removing the sensor and joining the 2 blue wires solved the problem. the unit still displays "F" when first powered on - i believe this is simply indicating that temperature will be displayed in Farenheit units... thanks!

Posted on Oct 13, 2009

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Try the owners manual, which can be found at this link: http://www.kaz.com/kaz/store/product/4df158d6f493432c932f4e3aab483c85/

Posted on Nov 09, 2007

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Had the same problem and called the company's (800) number. (800) 332-1110
Was informed that I could cut the chord and mail it to KAZ Returns Dept (250 Turnpike Road, Southboro MA, 01772). They will send you a new unit in lieu of a $10 check to cover return shipping.

Posted on Jan 23, 2008

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Greg12345 has correct solution. Project took me 45 minutes and unit works fine now. Only thing I would add is how to open the white box. Note 4 tabs on ENDS of box. Using 1/8" slotted screwdriver push in tab lock while gently prying loose that corner. Repeat for each corner.
Remember, upon using Greg's solution you will have disabled the tip-over sensor. The unit will not turn off now if it is tipped over.

Posted on Nov 22, 2010

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Posted on Jan 02, 2017

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SOURCE: oil filled heater wont stay on

I was having the same problem and did a search to find this link. This morning when I turned it on, I backed the temperature down to 66 when it first came on (defaults to 70) and it appears to be working now (it's been on for over 10 minutes)

Posted on Dec 18, 2008

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